Roofing slab



ROOFING SLAB Filed June 27, 1921 Seeh? ATTORNEY Patented Mar. 24, 1925.

UNITED s'rArEs `HARRY HUG-YH. STEELE, OF PARIS, ILLINOIS.

noorinci 4sims.

Application filed June 27, 1921. Serial No. 480,760.

To all whom it may concern:

Beit known that I, HARRY H. S'rEELn,

a citizen of the United States, residing at Paris, in the county of Edgar and State of Illinois, have invented new andl useful Improvements in Roofing Slabs, of which the following -a specification.

This invention relates to an improved roofing slab. of the type which are made to represent shingles, the principal object'o'f the invention being to prevent the lowei` ends of the slabs from c'urling up under the action of the wind or sun.

Another object of the invention is to cover the slots formed in the lower part of the slab which divide said slab into' portions for representing a number of shingles.

These objects are secured by making the lower art of the slab of double thickness,

' the un er layer being of greater width than the length of the slots.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanyingdrawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which f Figure l is a face view of a slab constructed in accordance with my invention.

Figure 2 is a section on line 2-2 of Fig- 'ure 1.

Figure 3 is a fragmentary plan view of a roof covered with my slabs.

As shown in these views the slab 1 has a strip 2 oii its underface which extends from the lower edge to a point above the `inner ends of the slots 3. This strip may either be a separate strip placed on .the slab or it may be a continuation of the slab turned over, as shown in the drawings. The ends of this strip are cut off on an ineline, as shown at 4 and 4', one end of the strip being shorter than the slab to provide a recess 5 and the other end projects beyond the end of the slab. This will permit the slabs to be readily positioned as the projecting end on one slab will engage the .recess of the adjacent slab. Thus the slabs can be put on the roof very quickly tween the slots curling 'up due to the effect of the elements as is the case with slabs of 'a single thickness, as the slotted portions are held against curling actionby the strip 2 placed underneath them and this strip also sheds water passing through the slots 3. The double thickness of the lower part of the slab gives a massive ornamental effect so that my improved shingle is more ornamental than a shingle of a's'ingle thickness, the slotted parts and its water shedding qualities are increased.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.. v

I desire yit to be understood that I maymake changes 1n the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims What I claim is 1. A new article of manufacture comprising a roofing slab having a reenforcing strip on its under vside at its lower part, said strip having laterally offset ends so as to provide a recess at one end of the slab and a corresponding projection at the other end thereof. s

Q. A new article ot manufacture comprising a roofing slab having slots in its lower part and a reenforcing strip connected with the bottom face of the slab at the lower part thereof, said strip being of greater width than the length of the slots so as to entirely cover said slots.

3. A new article of manufacture comprising a roofing slab having its lower part folded over upon its bottom face to make the lower part of the slab of double thickness, the top thickness being slotted to it eliminates curling of the ends of ies imitate shingles and seid covered by the folded part.

4. A new article of manufacture comprising a roofing slab having a reinforcing strip on its under side at its lower part, said strip having laterally offset ends so as to provide eJ recess at one end ot the slab and e corresponding projection :it the other end thereof, the ends of the strip beingy inclined and the lower part of the slab above the strip beingsletted.

5, A roofing strip unit comprising a' strip folded back on itself, the folded edge being exposed to the weather when the strip is leidy the upper layer being notched out to slots being lform individuel roofing unit simulating tebs7 and the lower layer extending from said'folded edge to the full extent of seid notches.

6. A roofing strip unit comprising a strip folded beck on itself, the folded edge being exposedto the weather when the strip is laid, the upper layer heilig notched out to form individual roofing 'unit simulating tabs, and the lower layer extending from seid folded edge beyond the upper ends of said notches.

In testimony whereof I alix my signature. y

- HARRY HUG-H STEELE. 

